Carriage mechanism for calculating machines



' Mar. 20, 1923.

H. A. SHAPPELLE.

CARRIAGE MECHANISM FOR CALCULATING MACHINES.

2 SHEETSSHEET I.

FILED MAY 31,192l.

ATTORNEY Patented Mar. 20, 1923.

UNITED STATES 1,448,874 PATENT OFFICE.

HAROLD A. SHAPPELLE, OI LUZERNE BOROUGH, PENNSYLVANIA, ASSIGNOR TO I WALES ADDING MACHINE COMPANY, OF WILKES-BARBIE, PENNSYLVANIA, A

CORPORATION OF PENNSYLVANIA.

CARRIAGE MECHANISM FOR CALCULATING MACHINES.

Application filed Kay 81, 1921. Serial No. 473,688.

llCLLl], a citizen of the United States, resid ing in the borough of Luzerne, Luzerne County, Pennsylvania, have invented new and useful Improvements in Carriage Mechanisms for Calculating Machines, of which the following is a specification.

More particularly this invention is directed to improved means for releasably coupling and uncoupling the paper carriage of the calculating machine with a means for automatically shifting .the carriage from column to column, and constitutes an advance over the invention shown in the patent to A. Briechle #1,368,424, February 15, 1921, on which this device is an improvement.

The particular mechanism with which both the Briechle patent and my improvement relate is the application of means operable as an incident to the operation of a calculating machine, to shift the paper car- ,I'lage of such machine alternately in opposite directions on successive operations of the machine, whereby the operator may list designating numbers and amounts in parallel columns.

The idea of thus automatically shifting back and forth the paper carriage of a calculating machine is referred to as shuttling.

It is customary to provide an oscillatory mechanism positively operated from the main drive shaft of a calculating machine,

such mechanism being adapted to be releasably connected to the paper carriage to shuttle the latter between two columns.

It is also customary to provide tabulating mechanism for paper carriages to releasably hold the latter in a number of various positions to locate any column at the printing point opposite the types.

Obviously, this tabulating mechanism must be disabled prior to the operation of the paper carriage by the shuttling mechanism, in order to prevent interference and obstruction by the tabulating mechanism to the travel of the carriage when positively driven leftward by the shuttling mechanism.

Heretofore, it has been necessary for the operator to remember to disable the tabulating mechanism prior to driving the carriage by the shuttling mechanism, and beginners were apt to forget this preliminary requirement. s a result, the machine was liable to injury.

Furthermore, the connection between the shuttling mechanism and the paper carriage is manually eflected and often required the operator, especially if unfamiliar with the coupling mechanism, to step to the rear of the machine when coupling or uncoupling the shut-tle mechanism and paper carriage.

One object of the present invention is to insure that the shuttle mechanism cannot be connected or coupled to the paper carriage until the column tabulating mechanism is d sabled, and I attain this result by so associating the coupling and tabulating mechanism that the coupling cannot be effected until the operator has disabled the tabulating mechanism.

A further obj ect is the provision of means to lock the coupling members together, which locking means is simple in design and operation,and one which permits the ready connection and disconnection of the shuttle mechanism and paper carriage while the operator remains at his working position in' front of the machine.

Another object attained by my invention is the practically instantaneous disconnection of the paper carriage and shuttle mechanism, and the re-establishment of the column tabulating mechanism, by the partial operation of the usual finger lever which controls the column tabulating mechanism.

Other objects and advantages will appear hereinafter, and be fully pointed out in the claims.

In the accompanying drawings, Fig. l is a fragmentary rear view of a calculating machine, having a shuttle carriage equipped with one embodiment of my invention;

Fig. 2 is a sectional view through the carriage taken at right angles to Fig. 1, showing the shuttle drive connected to the carriage;

Fig. 3 is a similar view, showing the shuttle drive and carriage disconnected;

Fig. 4 is a fragmentary top plan, showing the parts disconnected; and

ig. 5 is a similar view, showing them connected.

In disclosing this embodiment of my invention, I have chosen to illustrate it as applied to the well known Wales machine, examples of which are shown in United States patents to lVales #797,032, August 15, 1005: lVlcFarland #342232, January 20, 1007 and #880,159, l ebruary 25. 1908; White #940J66. November 23, 1009; Mc- Farland i -1,024,013, April 23. 1912; Pentecost #1223419, April 24, 1917; and Briechle #l,363.42-l, February 15, 1921, to which reference may be made for a more complete understanding of the various mechanisms.

ln the ll'ales machine, the carriage. casting 206T. equipped with parallel rails 2067, is suitably secured to the rear end of the frame of the calculating machine, and a carriage slide 2065 travels between the rails 2067 on anti-friction bearings.

The end frames 2010 of the carriage are secured to and project upwardly from the carriage slide. and support the platen (not shown) and other well known parts of the carriage mechanism, including the customary tabulating mechanism to enable the proper location of the columns on the paper or other work sheet, relatively to the printing point. v

In the present instance, the tabulatmg mechanism includes a recessed abutment 2001 preferably fast on the upper stationary rail 2067*. A toothed tabulating bar 2002 having trunnions, as 2056 (Figs. 1, -1 and 5), journaled in the end frames 2010 of the carriage, carries a series of adjustable tabulating stops 2018*, each equipped with a tooth 2018 adapted to individually and successively enter the recess in the abutment 2091 to hold the carriage in various colum- .nar positions. determined by the adjustment of the stops 2013 along the bar 2092.

Operation of a finger lever 2022 projecting upwardly from the trunnion 2056 rocks the tabulating bar 2092 and the tabulating stops 2013 to withdraw the tooth 2018" of the active stop from the recess in the abutment 2091. which enables the carriage to be shifted to bring another column on the work sheet. to the printing point. The finger lever 2022 is provided with a slot 2022 (Fig. 3) embracing the platen axle 2004 journaled in the end frames 2010 of the carriage. the end walls of the slot adapted to contact with the axle to limit the throw of the finger lever. A spring 181 connected to the tabulating bar 2092 and to a stud 2058 projecting from a lug on the carriage slide 2065, normally holds the tabulating bar at one limit of its travel as determined by the slot 2022 in the finger lever 2022 to maintain the tabulating stops 2018 in effective position relatively to the abutment 2091 As disclosed in the patent .to Briechle #1,368,424 above referred to, the carriage may be shifted alternately in opposite directions on successive operations of the machine by means of an oscillating or carriageshii'ting mechanism. including a rocking member driven from the. main shaft of the machine and connected to a lever which in turn is adapted to be 'releasably secured to the carriage.

l conveniently employ substantially the same mechanism as is set forth in the Briechle patent, and consequently have merely indicated the tail of the rocking member at 2610 (Figs. 2 and 3), it being understood that the rocking member is adapted to swing from one to the other of its limits of travel at every operation of the machine.

A. fork 2655" pivotally mounted in the oscillatory tail 2610, loosely embraces a wrist pin 2655 projecting from the lower end of a crank 2613 forming part of the transmitting lever through which motion is imparted from. the rocker 2610 to the paper carriage. The upper end of the crank 2613 is secured to the inner or forward end of a sleeve 26 12 journaled on a pintle 2652 projecting rearwardly from a bracket 2018" secured at its upper end to, and depending from, the lower rail 2067". The outer rear end of the sleeve 2642 carries a cross head 2613 provided at its lower end with a pair of laterally-projecting apertured lugs 2613, the lugs being spaced apart to embrace a similar pair of lugs 2613 projecting from the lower end of an upper crank 2613, which. with the cross head 2613 sleeve 2642 and lower crank 2613 constitutes the sectional lever for transmitting motion from the oscillatory drive member 2610 to the carriage. A hinge pin 2653 connects the pairs of lugs 2613", 2613 of the cross head 2613 and crank 2613, to permit the upper crank 2613 to swing towards and from the carriage in connecting and disconnecting the carriage and the carriage-shifting means. A stop flange 2613' (Figs. 13) on the crank 2613 contacts with the cross head 2613 to limit the outward throw of the crank 2613.

A thrust pin 2652 extending transversely to, and slidingly mounted in the lower crank 2613 and in the cross head 2613*, has its rear end extended outwardly to contact with the inner face of the swinging crank 2613, and a spring 2681 confined between the outer face of the lower crank 2613 and a stud 53 in the pin, presses the outer rear end of the thrust pin against the upper crank 2613 to yieldingly retain the latter disengaged from the carriage, as shown in Figs. 3 and 4.

Connection of the lever 2613, 2613 with the carriage is effected by means of a separable coupling. the drive member 2651 of which is pivotally mounted in the upper free end of the upper crank 2613 and adapted to engage a driven member 2690 secured to the carriage.

member 2690. the outer end of the drive member 2651 being preferably knurled to permit manipulation to register the slot with the rib.

Brackets 2029" projecting from the carriage slide 2065, support a toothed bar 2092 on which the driven member 2690 of the coupling is mounted and along which it is adjustable. the driven member having an angular arm 2690 (Figs. 2 and 3) extending across the bar 2092", and carrying a set screw 2651 equipped with a toothed dog 2692 to engage the teeth of the bar 2092 and lock the driven member 2690 where adjusted.

A shouldered pilot 2651 projects laterally from the upper end of the cross head 2613", the reduced outer end of the pilot adapted to enter an aperture in the upper crank 2613, to brace and strengthen the latter against the weight of the carriage during shuttling operations.

It will be obvious from an inspection of Figs. 3 and 4. that the engagement of the tabulating stop 2018 with the stationary abutment 2091 would interfere with a shuttling operation of the paper carriage, but when the tabulating mechanism is disabled, and the crank 2613 is swung towards the carriage against the tension of the spring 2681 to fit the drive member 2651" of the coupling to the-male or driven mem ber 2690 on the carriage, oscillation of the rocking member 2610 will swing the transmitting lever back and forth to shiftthe carriage from one column to another and back again, the distance between the columns being governed by the throw of the lever 2613, 2613. Since the lever must swing in the arc of a circle whose center is the pintle 2652. and since the carriage travels in a rectilinear direction, relative movement must be permitted between the coupling members, which is provided for by allowing the drive coupling member 2651 to slide along the rib 2690 of the driven coupling member 2690, the drive member at the same time swiveling in its crank 2613.

The foregoing constitutes the prior art, and forms a part of the present invention only in so far as it coacts with the novel elements hereinafter referred to.

It will be remembered that the thrust pin 2652 under the influence of its spring 2681, tends to separate or uncouple the drive and driven members 2651 and 2690. Hereto fore, means has been provided to positively lock the upper crank 2613 in position with the coupling members in engagement, such locking means being manipulative and necessitating a particular relative arrangement of the locking means and crank, before the locking means could become effective. ()fttimes the locking means became accidentally disarranged and, .being located at the rear of the machine, out of sight of the operator, required the operator, if unfamiliar with its operation, to step to the rear of the machine to properly adjust the locking means so that it would cooperate with the crank 2613.

.I have provided an improved retaining means controllable by the operator while in position in front of the machine, which re taining means is far simpler and more readily manipulated than the prior fastening means.

Furthermore, I have contrived the retaining means to enable it to also perform the additional and novel function of preventing the engagement of the coupling members so long as the tabulating mechanism remains effective.

In the first place, I have provided a novel locking means to releasably retain the coupling members engaged.

Secondly, I have contrived a control for such locking means which is operable by the operator while in working position in front of the machine.

T hirdly, I have arranged the locking means to also act as a safety device to prevent the connection of the carriage-shifting means and the carriage, so long as the tabulating mechanism remains effective, disengagement of the tabulating mechanism immediately permitting the connection between the carriage and its shifting means to be consummated.

As one means to effect these results, I provide a horizontally disposed lever 2614 of the bell crank type, pivotally mounted at 2660, preferably upon the driven member 2690 of the separable coupling, which is adjustable longitudinally of the carriage, along the bar 2092 A retaining and blocking finger 2650 depends from one arm of the lever 2614", and normally lies in the path of the drive member 2651 of the coupling, as shown in Fig. 4. to prevent the engagement of the coupling members. As will be noted, should such engagement be attempted, the inner face of the drive member 2651 will strike the finger 2650 and be held thereby out of contact with the driven member.

To enable the operator, while in his working position in front of the machine, to displace the finger 2650 from the path of the drive member 2651 I arrange to connect the remaining arm of the bell crank lever 2614 with a red 2600 lying parallel with the bar 2092 and supported at its opposite ends in brackets 2618 secured to the tabulating bar 2092". The connection betweenv the lever 261 1 and the rod 2600 is preferably such as to permit the lever to slide along the rod as the lever and the driven member 2690 are adjusted along the bar 2092", and as one convenicnt means, I provide the lever 2614 with a pair of ears 2614" adapted to embrace the rod 2600 to permit the latter to actuate the lever 2614 in any position to which the lever may be adjusted.

It will be remembered that pressure against the finger lever 2022 rocks the tabulating bar 2092 with its stops 2018* against the tension of the restoring spring 481 to disengage the active stop 2018 from the abutment 2091, and because of the connection of the universal rod 2600 carried by the tabulating bar 2092", with the bell crank lever 2614", the tabulating bar, when rocked as above explained, will operate through the rod 2600 to swing the bell crank lever counterclockwise, (as viewed in Fig. 4), to withdraw the finger 2650 from the path of the drive member 2651 and permit the engagement of the drive member with the driven member 2690'.

Naturally, the operator, should he attempt to connect the coupling members without first disabling the tabulating stop mechanism, will be apprised of his omission, by his inability to effect the connection, and will thereupon operate th manipulative lever 2022 to displace the finger 2650. And operation of the lever 2022 also disables the tabulating mechanism which is the result desired, befor the coupling of the carriageshifting mechanism and the paper carriage is effected.

It will be recalled that the thrust pin 2652, by pressing against the upper crank 2613, tends to disconnect the coupling members 2651 and 2690.

I further contrive to utilize the blocking I finger 2650 to releasably retain the coupling members 2651 and 2690 in engagement, to which end, I form a seat or recess 2651" (Figs. 3 and 4) in the periphery of the drive member 2651 of the coupling, such seat or recess extending parallel with the slot in the drive member in which fits the rib 2690" of the driven member of the coupling. The seat 2651" lies at substantial right angles to the path of travel of the upper crank 2613 taken when the crank is swung on its hinge 2653.

As soon, therefore, as the inner end of the drive member 2651 of the coupling has passed the displaced finger 2650, the operator may release the finger lever 2022 to the action of the spring 481 which will tend to restore the tabulating mechanism and the lever 2614 with its finger 2650, to effective position. Such restoration, however, is frustrated by the contact of the blocking finger 2650 with the periphery of the drive member 2651" of the coupling,

which maintains the tabulating mechanismineffective. The finger 2650-enters the seat 2651" in the drive member 2651 and is held therein against accidental displacement by the tension of the spring 481, to frictiorr ally retain the drive member coupled with the driven member 2690 against the influence of the thrust pin 2652.

*By arranging the seat 2651" parallel with the slot in the drive member, and with the finger 2650, the correct adjustment of the rotatable drive member 2651 to bring its slot into consonance with the rib 2690" will also correctly position the seat 2651" relatively to the retaining finger 2650.

The slot in the drive member 2651 of the coupling preferably extends diametrically across the inner face of the coupling. As the operator, from his position in front of the machine, may turn the drive member in fitting the slot over the rib 2690" of the driven member, so that the seat 2651" lies on the opposite side of the drive member from the retaining finger 2650, it is within the scope of my invention to provide seats 2651" on opposite sides of the inner end of the drive member, or to provide the inner end of the drive member with a peripheral shoulder behind which the retaining finger may seat.

The arcuate travel of the crank 2613 and the drive member 2651 of the coupling carried thereby relatively to the rectilinear travel of the paper carriage and the driven member 2690 of the coupling carried thereon, requires the provision of a sliding connection between the coupling members, which is efi'ected by the rib and slot arrangement, the rib 2690" being of suflicient length to enable the drive member 2651 to retain its hold thereon during its arcuate travel in shuttling the carriage.

Similarly, the retaining finger 2650 is of suflicient length to retain its hold in the seat 2651" during the oscillations of the latter relatively to the finger, the seat sliding up and down relatively to the finger as the slotted drive member 2651 slides up and down relatively to the rib 2690".

This form of locking means to retain the coupling members connected possesses the further advantage over the prior art, of a semi-automatic release. Thus, a slight pressure on the finger lever 2022 will rock the tabulating bar 2092", the universal rod 2600, and the bell crank lever 2614", to withdraw the retaining finger 2650 from its seat 2651", whereupon the thrust pin 2652 will immediately snap the upper crank 2613 away from the carriage, to the position shown in Figs. 3 and 4, to disconnect the coupling members. Release of the finger lever 2022 will permit the spring 481 to restore the tabulating mechanism to its effective position, and also re-locate the finger 2650 in the path of the drive member 2651".

(hange's may be made in the form and arrangement of the several parts, without de parting from the spirit and scope of this invention.

\Vhat I claim as new, is

1. In a calculating machine, the combination with a paper carriage; a carriage-shifting mechanism; and a coupling to releasably connect the paper arriage and its shifting mechanism. comprising a driven member on the carriage, and a drive member on the shifting mechanism engageable with the driven member to permit relative movement as the drive member operates; of locking means on the carriage to engage and frictionally hold the drive member in contact with the driven member.

2. In a calculating machine, the combination with a paper carriage; a carriage-shifting mechanism; and a coupling to releasably ionnect the paper carriage and its shifting mechanism, comprising a driven member on the carriage, and a drive member on the shifting mechanism engageable with the driven member to permit relative movement as the drive member operates; of manuallycontrolled locking means on the carriage to releasably engage and hold the drive mem ber in contact with the driven member.

3. In a calculating machine, the combination with a paper carriage; a carriage-shifting mechanism; and a coupling to releasably connect the paper carriage and its shifting mechanism, comprising a driven member on the carriage, and a drive member on the shifting mechanism engageable with the driven member to permit relative movement as the drive member operates; of locking means on the carriage to engage and frictionally hold the drive member in contact with the driven member, the drive member of the coupling adapted for movement relatively to the locking means while in contact with its driven member, during the operation of shifting the carriage.

4:. In a calculating machine, the combination with a paper carriage; a carriage-shifting inechanism; and a coupling to releasably connect the paper carriage and its shifting mechanism, comprising a driven member adjustably mounted on the carriage, and a drive member on the shifting mechanism adapted to have a sliding engagement with the driven member; of a locking means adjustablv mounted on the carriage and adapted to releasably engage and maintain the drive member in contact with its driven member, irrespective of the relative positions of the drive and driven members, when connected 5. In a calculating machine, the combination with a paper carriage; a carriageshifting mechanism; and a coupling to releasably connect the paper carriage and its shifting mechanism, comprising a driven member adj ustably mounted on the carriage, and a drive member on the shifting mechanism adapted to have a sliding engagement with the driven member; of a locking means pivotally mounted on the driven member of the coupling and adapted to releasably engage and hold the drive member in contact with its driven member.

6. In a calculating machine, the combination with a paper carriage; a carriage-shifting mechanism; and a coupling to releasably connect the paper carria'ge and its shifting mechanism, comprising a driven member adjustably mounted on the carriage, and a drive member on the shifting mechanism adapted to have a sliding engagement with the driven member; of a locking means, including a retaining finger adapted to removably enter a seat in the drive member to hold the drive member in contact with its driven member, and permit movement of the drive member relatively to the retaining finger during the operation of shifting the carriage.

7. In a calculating machine, the combination with a paper carriage; and carriageshifting mechanism; of a coupling to releasably connect the shifting mechanism and carriage, including a driven member mounted on the carriage, and a drive member associated with the shifting mechanism, and adapted to slidingly engage the driven member, the drive member having a seat formed therein; and a locking means mounted to travel with the carriage, and including a retaining finger adapted to enter the seat, and prevent accidental disconnection of the coupling members, the drive member adapted to shift along the retaining finger while the latter is in effective position, during the operation of the carriage-shifting means.

8. In a calculating machine, the combination with a paper carriage; a carriage-shifting mechanism; and a coupling to releasably connect the paper carriage and its shifting means, comprising a driven member adjustably mounted on the carriage, and a drive member associated with the shifting mechanism and adapted to have a sliding engagement with the driven member; of a locking means mounted to shift with the driven member, and adapted to releasably engage and maintain the drive member in contact with the driven member; and means relatively to which the locking means is adjustable, to release the locking means in any of its adjusted positions.

9. In a calculating machine, the combination with a paper carriage; a carriage-shifting mechanism; and a coupling to releasably connect the paper carriage and its shifting means, comprising a driven member adjustably mounted on the carriage, and a drive member associated with the shifting mechanism and adapted to have a sliding engagemeat with the driven member; of a. locking means shiftable on the carriage, and adapted to relcasably engage and maintain the drive member in contact with the driven member; and a universal bail to release the locking means in any of its adjusted positions.

10. In a calculating machine, the combination with a paper carriage; a carriageshifting mechanism; and a coupling to releasably connect the paper carriage and its shifting means, comprising a driven member adjustably mounted on the carria e, and a drive member associated with the shifting mechanism and adapted to have a sliding engagement with the driven member; of a locking means shiftable along the carriage, and adapted to releasably engage and hold the drive member in contact with its driven member; ears on the locking means; and a universal bail embraced by the ears; and adapted to release the locking means in any I of its adjusted positions.

11. In a calculating machine, the combination with a paper carriage adapted for rectilinear reciprocation; oscillatory carriageshifting mechanism; and a coupling to releasably connect the carriage and its shifting mechanism, the coupling comprising a drive member rotatably mounted onthe can riage-shifting mechanism, and a driven member on the carriage, the driven coupling member permitting movement of the coacting drive member relatively thereto, while the members are connected; of a locking means adapted to releasably engage oneof the coupling members to maintain the membersconnected, the locking means adapted to engage the coupling member in such manner that the relative movement between the coupling members due to the conversion of oscillatory into rectilinearly reciprocatory motion, may also occur between lockingmeans and the coupling member engaged thereby while the locking means remains effective.

12. In a calculating machine, the combination with a paper carriage; tabulating mechanism therefor, including talbulating stops, an abutment with which the stops coact; and means to disconnect the stops and abutment; carriage-shifting mechanism; and a coupling comprising a drive and a driven member, to releasably connect the carriage and its shifting means; of locking means controlled by the tabulating mechanism, to releasably maintain the connection between the coupling members.

13. In a calculating machine, the combination with a paper carriage; tabulating mechanism therefor, including tabulating stops, an abutment with'which the stops coact; and means to disconnect the stops and abutment; carriage-shifting mechanism; and a coupling comprising a drive and a driven member, to releas'ably connect the carriage and its shifting means; of locking means controlled by the tabulating mechanism to releasably maintain the coupling members connected, the locking means adapted toprevent such connection while' the tabulating mechanism remains in effective position.

14. In a calculating machine, the combination with a paper carriage; tabulating mechanism therefor, including tabulating stops, an abutment with which the stops re spectively engage, and means for disengaging the effective stop and the abutment; carriage-shifting mechanism; and a coupling, comprising a drive and a driven member to releasably connect the carriage and its shifting mechanism; of locking means controlled by the tabulating mechanism, to releasably maintain the coupling members in contact, and adapted to prevent the engagement of the coupling members until the tabulating stops and abutment are disconnected.

15. In a calculating machine, the combination with a paper carriage; tabulating mechanism therefor, including tabulating stops, an abutment with which the stops respectively engage, and means for disengaging the effective stop and the abutment; carriage-shifting mechanisms; and a coupling, comprising a drive and a driven member, to releasably connect the carriage and its shifting mechanism; of means controlled by the tabulating mechanism to prevent the connection of the carriage and its shifting mechanism until the tabulating stops and abutment are rendered inactive.

16. In a calculating machine, the combinationwith a paper carriage; carriage-shifting mechanism; and a coup-ling comprising a driven member associated with the carriage, and a drive member associated with the shifting mechanism, the drive member adapted to releasably engage the driven member; and means tending to separate the drive and driven members; of a locking means mounted on the carriage, and including a retaining finger adapted to seat in a recess formed in the drive member of the coupling, to releasably hold the coupling members connected, the retaining finger and seat being so arranged as to permit relative movement between them as the carriage shifts back and forth, the retaining finger being of such length as to maintain contact with its seat during such travel of the carriage.

17. In a calculating machine, the combination with a paper carriage; tabulating mechanism therefor, including a tabnlating bar, stops on the bar, an abutment with which the stops individually engage, and means to rock the tabulating bar to disengage the etfective stop and-the abutment; carriage-shifting mechanism; and a coupling comprising a driven member associated with the carriage, and a drive member associated with the shifting mechanism, the drive member adapted to releasably engage the driven member; and means tending to separate the drive and driven members; of a locking means mounted on the carriage and controlled by the tabulating mechanism; the locking means normally adapted to prevent the engagement of the coupling members until the tabulating sto and abutment are disconnected, after whic the locking means is adapted to releasably retain the coupling members enga d.

18. In a ca culating machine, the combination with a paper carriage; tabulating mechanism therefor, including a tabulatin bar, stops on the bar, an abutment wit. which the stops individually engage, and means to rock the tabulating bar to disengage the effective stop and the abutment; carriage-shifting mechanism; and a coupling comprising a driven member associated with the carriage, and a drive member associated with the shifting mechanism, the drive member adapted to releasbly engage the driven member; and means tending to separate the drive and driven mem bers; of a locking means mounted on the carriage and normally adapted toprevent the engagement of the coupling members while the tabulating mechanism remains effective; a lock-releasing bail carried by the tabulating bar, and connected with the locking means, to enable the means for disabling the tabulating mechanism to also disable the locking means, the locking means effective to releasably hold the coupling members in engagement after the members have been connected.

19. In a calculating machine, the combination with a paper carriage; tabulating mechanism therefor, including a tabulating bar, stops on the bar, an abutment with which the stops individually engage, and means to rock the tabulating bar to disengage the effective stop and the abutment; carriage-shifting mechanism; and a coupling comprising a driven member associated with. the carriage, and a drive member associated with the shifting mechanism. the drive member adapted to releasably en gage the driven member, and means tending to separate the drive and driven members; of a locking means adapted to prevent the engagement of the coupling members while the tabulating mechanism remains effective, and to releasably hold the members connected after the coupling has been effected.

20. In a calculating machine, the combi nation with a paper carriage; tabulating mechanism therefor, including a tabulating bar, stops on the bar, an abutment with which the stops individually engage, the bar adapted to be shifted to disengage the effective stop and the abutment, and a spring to yieldingly retain the stop in contact with the abutment; carriage-shifting mechanism; and a coupling comprising a driven member mounted on the carriage, and a drive member associated with the carriage-shifting mechanism, the members adapted for engagement and disengagement, with provisions for relative movement when engaged; and means tending to separate the coupling members; of a locking means shiftably mounted on the carriage and having ears; and a bail connected with the tabulating bar and embraced by the ears, the locking means including a retaining finger normally adapted to prevent connection of the coupling members; the drive member of the coupling having a seat to accommodate the retaining finger, at least one wall of such seat lying transversely to the direction of travel of the drive member when disengaging from the driven member to enable the retaining finger to'hold the coupling "members connected and permit relative movement between the drive member and retaining finger, as the carriage is shifted.

21. In a calculating machine, the combination with a paper carriage; carriage shifting mechanism; and a coupling com prising a driven member mounted on the carriage, and a drive member-associated with the carriage-shifting mechanism, the members adapted for engagement and disengagement, with provisions for relative movement when engaged; and means tending to separate the coupling members; of a locking means mounted on the carriage, includin a retaining finger; and means to normaIly position the retaining finger in the path of the drive member to prevent connection of the coupling members.

22. In a calculating machine, the combination with a paper carriage; carriage-shifting mechanism; and a'coupling comprising a driven member mounted on the carriage, and a drive member associated with the carriage -shifting mechanism, the members adapted for engagement and disengagement, with provisions for relative movement when engaged; and means tending to separate the coupling members; of a locking meansmounted on the carriage, including a retaining finger; and means to normally position the retaining finger in the path of the drive member to prevent connection of the coupling members; the drive member of the coupling having a wall lying transversely to the direction of travel of the drive member when disengaging from the driven member, behind which wall the retaining finger is adapted to be accommodated, to hold the coupling members connected; and means to shift the retaining finger out of its obstructing position to permit connection of the coupling members, and to enable the retaining finger to be located in locking position behind the wall of the drive member of the coupling.

23. In a calculating machine, the combination with a paper carriage: a carriageshifting mechanism; and a coupling to releasably connect the carriage and its shifting means, including a drive and a driven member adapted to have a releasable slip joint connection; one of said members being shiftable towards and from thepoacting member, in coupling and uncoupling; of locking means to contact with the shiftable member and retain it in coupled relation with its coacting member, the locking means normally adapted to lie in the path of the shiftable member to prevent its connection with its coacting member.

24. In a calculating machine, the combination with a paper carriage; a carriageshifting mechanism; and a coupling to re leasably connect the paper carriage and its shifting mechanism; of a locking means adapted to releasably engage one of the coupling members to prevent accidental disconnection of the-coupling; and means relatively to which the locking means is adjustable, to release the locking means in any of its adjusted positions.

25. In a calculating machine, the combination with a paper carriage; a carriageshifting mechanism; and a separable coupling to releasably connect the carriage and its shifting means. including a drive member and a driven member, the driven member adjustable relatively to the carriage, the drive member being adjustable relatively to the driven member for proper engagement therewith; of a locking means to releasably maintain the coupling members engaged, the locking means being adjustable with the driven member and adapted to coact with the drive member only when the drive and driven members are in proper relative adjustment.

26. In a calculating machine, the combina tion with a paper carriage; a carriage-shifting mechanism; and a separable coupling to releasably connect the carriage and its shifting mechanism, the coupling including drive and driven members, one of which is provided with a rib and the other of which is provided with a slot to fit over the rib when the coupling members are in effective engagement; of a locking means to releasably hold the coupling members engaged, and in cluding a retaining finger, one of the coupling members having a seat to accommodate the retaining finger, the seat and retaining finger being so related that the proper adjustment of the coupling members relatively to each other to permit eflective engagement will properly position the seat and the retaining finger.

HAROLD A. SHAPPELLE. 

